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P9531P

Dual Output 2+1 Phase PWM Controller with 3 Embedded 5V Drivers for AMD® SVI2 Mobile CPU Core Power

Datasheets PDF

General Description

The uP9531P is an AMD® SVI2 compliant mobile CPU voltage regulator controller that integrates a 2-phase PWM controller for VDD and a 1-phase PWM controller for VDDA. The VDD controller can be configured as 2/1-phase, and the VDDA controller can be configured as1/0-phase (0 denotes VDDA controller is disabled) for platform power design flexibility. The controller provides further flexible operating phase configuration to support 3+0 application.

This device has 3 embedded 5V MOSFET drivers with integrated bootstrap diodes. This device combines true differential output voltage sense, inductor DCR current sense, input voltage sense and adaptive voltage positioning to provide accurately regulated voltage for mobile CPU. It adopts uPI’s proprietary RCOT+TM (Robust Constant On-Time) control topology to have fast transient response. The uP9531P supports diode emulation mode operation to enhance the ight load efficiency.

The uP9531P provides power good indicator and thermal hot indicator. It also provides complete fault protection functions, including over voltage, under voltage, over current, thermal shutdown and under voltage lockout. The uP9531P is available in WQFN5x5 – 40L package.

Pin Configuration & Typical Application Circuit

Feature

  • AMD® SVI2 Compliant
  • RCOT+TM Control Topology
    • Easy Setting
    • Fast Transient Response
  • 3-Embedded MOSFET Drivers with Bootstrap Diode
  • Flexible Operation Phase Configuration
    • 2/1-Phase for VDD
    • 1/0-Phase for VDDA
    • Support 3+0 Phase Application
  • SVI2 Voltage Regulator Address Selection
  • Diode Emulation Mode at Light Load Condition
  • Function Setting Pin for Regulator Parameter Setting
  • Inductor DCR Current Sense for Droop/Per Phase OCP/Total Output OCP
  • Differential Remote Output Voltage Sense
  • Power Good Indicator
  • Temperature Sense and Thermal Hot Indicator
  • OCP/UVP/OVP/UVLO/Thermal Shutdown
  • RoHS Compliant and Halogen Free

Application

  • AMD® SVI2 Mobile CPU Voltage Regulator
  • Laptop Computer